Hybrid dual-modality image processing system and method

摘要

Hybrid dual-modality image processing systems and methods are disclosed. For example, an image processing system includes a computer for processing SPECT tomographic projection data and a CT volume image. The computer derives a SPECT transverse volume image from the projection data and registers the SPECT transverse volume image with the CT volume image to obtain an attenuation map and registration information. The computer uses the attenuation map and the registration information to derive a SPECT transverse volume image with attenuation correction. The computer uses the registration information to derive a SPECT transverse volume image without attenuation correction. The SPECT transverse volume images, with and without attenuation correction, are derived at or near the same time, using the same registration information. The registration information is stored in, carried by, or otherwise communicated through the attenuation map for subsequent processing of the SPECT transverse volume images.

主权项

1. An image processing system, the system comprising:
a computer, a first tomographic projection data generated by a first imaging modality, and a second tomographic projection data generated by a second imaging modality, wherein the computer generates a first reconstructed image data from the first tomographic projection data, and a second reconstructed image data from the second tomographic projection data, wherein the computer registers the second reconstructed image data with the first reconstructed image data to generate an attenuation map and a registration information, wherein the computer uses the second tomographic projection data, the attenuation map, and the registration information to generate an attenuation-corrected reconstructed image data corresponding to the second imaging modality, and wherein the computer uses the second tomographic projection data and the registration information to generate a non-attenuation-corrected reconstructed image data corresponding to the second imaging modality.